Jeu 1 :

Mes solutions :

892 = 9×(25×4−1)+1
892 = 4×(6+1+9×(25−1))
892 = 25×9×4−(6+1+1)
892 = 4×(6+9×(25−1)+1)
892 = 4×(25×9−(1+1))
892 = 1+9×(25×4−1)